An individual who has the genotype HbSHbA has the phenotype of:
What will be an ideal response?
having both normal, circular red blood cells and sickle-shaped red blood cells in his or her circulatory system.
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Subsequent to motor neuron degeneration in Charcot-Marie-Tooth disease, muscles begin to weaken and degenerate as well. What is the likely cause?
Charcot-Marie-Tooth is the most commonly inherited peripheral neuropathy, and has no known cure. Patients suffer damage to motor and sensory neurons, leading to degeneration of muscles and gradual loss of motor control. A. Muscles will atrophy if they don't receive regular stimulation from motor neurons. B. Muscles require healthy Schwann cells for myelination as well. C. Muscles contain large numbers of mitochondria. D. Toxins leak out from the dying motor neurons onto the muscles. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content/Choose Answer · What do you already know about components of the nervous system? What other information is related to the question? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
If a person has fully functional eyes, except for the absence of a lens, they would ____
a. be totally blind b. be able to perceive light and even respond to different light intensities c. be able to perceive light and even colors (solid color over a large area), but not details d. be able to see some details and read print, but only if the text were written in large, black letters e. have normal vision if given glasses
A Barr body exists for the purpose of
a. protein dosage compensation. b. insuring fertilization. c. blocking the activity of the Y chromosome. d. turning on the SRY gene. e. activating master genes
Accommodation enabling us to switch from focusing on something nearby to something more distant is accomplished by the ________ muscle
Fill in the blank(s) with correct word